Time-switch.



J. E. H. BERAUD.

TIME SWITCH. APPLICATION FILED-JAN. a, 1914.

Patented Dec. 29, 1914.

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a Q 1 a g '1'] .1 K F K 2 la K 9 w M R a Z W W E u M M J u r JULES EMILEHENRI IBERAUD, or AsNI nREs, FRANCE.

TIME-SWITCH.

1,123,072. Specification of Letters Patent. P t t 29 1914 Applicationfiled January 3, 1914. Serial No. 810,138.

. 210 all whom it may concern: Upon the cover al of the bell d is fixedalso B it known that I, JULEs EMILE HENRI a bent arm 9 g which is actedupon by a BERAUD, a citizen of the Republic of F rance, spring h whichtends to constantly thrust and a resident of 3i Rue Bapst, Asmeres, thebell d downward. The end 9 of the Seine, France, have invented a new andusebent arm 9' g rests upon the lower part of ful Time-Switch, of whichthe following is an inclined plane 2' with which the rod 2" of aspecification. a push button 2' is provided. A roller 2'" This inventionrelates to time switches facilitates the movement of the rod gt.

which can be operated directly by hand for In the tube 0 is adapted toslide with G:

the purpose of effecting during a deterslight friction a glass tube mwhich forms mined period of time, the lighting up of a float. In theaxis of the tube m is mountelectric lamps. d a nd cting rod m, connectedby one The object of the invention-is to produce end to a contact piecemwhich closes up an apparatus of this kind which is partlcthe upper partof the tube m and held in ularly simple and which contains neither aplace at its other end by a plug of plaster clockwork movement nor anelectromagnet. m which only partially closes up the lower The apparatusis composed broadly of part of the tube on. The plug m is protwo vesselswhich communicate with each vided with two perforations m (see parotherand contain a certain quantity of merticularly Fig. 5) which allow themercury cury and in one of which slides with slight to pass into theinterior of the float m.

friction an air bell .which is not packed. Above the contact piece of isarranged a By pressing uponabutton, the bell is raised similar contactpiece 0 mounted on a and filled with air after which it sinks knucklejoint on the end of a screw rod 0 down into the mercury so that thelevel This rod 0 is screwed into a conducting thereof rises in the othercommunicating support 0 connected to one of the poles of vessel whichcauses the closing of the cirthe current. The other pole of the currentcuit. The air then escapes slowly from the is connected by a rod Z withthe mercury bell, the mercury resumes, at the end of a which fills thefurrow a-.

fixed period of time, its original level and The working of theapparatus is as folthe current is switched off again. lows :-When thebush button 2' is pressed, A constructional form of the subject mattheinclined plane 11 raises the bent lever g g ter of the invention isrepresented by way of and consequently the bell d which emerges examplein the accompanying drawing from the mercury and becomes filled with hih h w i air. When the push button 5 is released Figure 1 an elevation,partially in section, the spring it thrusts down the lever r g of theapparatus. Fig. 2 a plan view parand the bell d which sinks into themercury. tially in section. Fig. 3 a section on the The level of themercury now rises in the line 55 of Fig. 1. Fig. 4 on a larger scaletube 0 and lifts the float m. The contact a section of the air bell onthe line H of piece 777. then comes in contact with the Fig. 2. Fig. 51s a section, likewise on a piece 0 and the excess of mercury rises intolarger scale, on the line 55 of Fig. 1. .the interior of the tube m bypassing Upon a projection a on a porcelain base through the openings m.The current a are mounted two glass cylinders b and 0 passes through thefollowing circuit viz. the communicating with each other by a furrod Z,furrow a rod m contactpiecewf, row a cut in the projection a. Thesecylincontact piece 0 and the lamps in the circuit ders which formcommunicating vessels, are light up. The air then escapes slowly filledwith mercury up to the level a:y. through the layer of porous material 6and In the tube Z), the diameter of which is through the hole (Z in thecover al of the greater than that of the tube 0, slides with bell d, thelevel of the mercury rises little. slight friction a bell d formed of aglass by little in the tube 5 and sinks in the tube tube closed at itsupper part by a cover al a, so that at the end of a fixed period of Thiscover al of the bell d is pierced by a time, the float m drops againunder the iniole d and is lined internall with a lining fluence of itsown weight and breaks the z of a porous material such as plaster forcontact m 0. At this moment the mercury 72: ixample (see particularlyFig. 4) which is is still in contact with the rod m The :apable ofallowing the air to filter slowly. breaking of the contact does notaffect the mercury which runs no risk of being changed. The making andbreaking of the contact m 0 is effected in a perfect manner inconsequence of the knuckle joint mounting of the contact piece 0.

The time during which the current passes may be regulated either byacting upon the screw threaded rod 6 or by giving a greater or lesserthickness to the layer of porous material.

It is obvious that the invention is not limited to the constructionalform which has just been described above by way of ex: ample only. Y

What 1 claim and desire to secure by Letters Patent of the United Statesis 1. In a time switch, two communicating vessels containing mercury, anair bell floating in one of said vessels, means for momentarily liftingsaid bell to admit air therein, means for permitting the gradual escapeof air therefrom when in floating position, a floating contact in theother vessel and a cooperating contact temporarily engaged thereby onthe displacement of the mercury in said vessel consequent upon theadmission of air to the air bell in the communicating chamber,substantially as described. v

2. In a time switch, two communicating vessels containing mercury, anair bell apertured in its upper portion and floating in one of saidvessels, a porous closure for said aperture through which the air insaid bell may be gradually discharged, a floating contact in the othervessel and a cooperating contact temporarily engaged thereby on thedisplacement of the mercury in said vessel consequent upon the admissionof air to the air bell in the communicating chamber, substantially asdescribed.

3. In a time switch, two communicating vessels containing mercury, anair bell float- '1ng in one of said vessels, means for momentarilylifting said bell to admit air therein, means for permitting the gradualescape of air therefrom when in floating position, and means temporarilyclosing a circuit through the mercury on the displacement of the latterin the other'vessel consequent upon the admission of air to the said airbell in the communicating vessel, substantially as described.

4. In a time switch, two communicating vessels containing mercury, anair bell floating in one of said vessels, means for momentarily liftingsaid bell to admit air therein, means for permitting the gradual escapeof air therefrom when in floating position, a float contact in thesecond vesposition, a float contact in the second ves-- sel, acooperating contact engaged thereby on the displacement of the mercuryin said second vessel by the air bell in the communicating vessel, saidcooperating contact comprising a pivoted contact piece adapted toconform to the position of the float contact, substantially asdescribed.

6. In a time switch, two communicating vessels containing mercury, anair bell floating in one of said vessels, means for momentarily liftingsaid bell to admit air therein, means for permitting the gradual escapeof air therefrom when in floating position, a float contact in thesecond vessel, a.cooperating contact engaged thereby on the displacementof the mercury in said second vessel by the air bell in thecommunieating vessel, said cooperating contact comprising an adjustablescrew rod and a contact piece ball-jointed to one end thereof, for thepurpose described.

7. In a time switch, two communicating vessels containing mercury, anair bell floating in one of said vessels, a push button with cam faceoperatively engaging said bell to momentarily lift the same to admit airtherein, a spring exerting a downward thrust upon said bell, means forpermitting the gradual escape of air from said bell when in floatingposition, a floating contact in the other vessel and a cooperatingcontact temporarily engaged thereby on the displacement of the mercuryin said vessel consequent upon the admission of air to the air bell inthe communicating chamber, substantially as described.

In testimony whereof I have signed my name to this specification, in thepresence of two subscribing witnesses.

JULES EMILE HENRI BERAUD.

Witnesses:

HANSON C. CoXE, Liaoiv PEILLET.

